The Xiaomi Redmi K80 Ultra arrives as a performance-first flagship killer, pairing MediaTek’s cutting-edge Dimensity 9400+ with a massive 7410 mAh silicon-carbon battery and a sharp 144Hz OLED display. Priced at around 310 EUR, it aims to deliver genuine flagship hardware without the premium price tag that usually accompanies it.
With IP68 protection, ultrasonic in-display fingerprint sensing, UFS 4.1 storage up to 1TB, and 100W fast charging, the Redmi K80 Ultra packs a spec sheet that punches well above its weight. This article breaks down what those numbers mean in real-world use and who stands to benefit most from this device.
Full Specifications
Network
| Technology | GSM / CDMA / HSPA / CDMA2000 / LTE / 5G |
| 2G bands | GSM 850 / 900 / 1800 / 1900 |
| CDMA 800 | |
| 3G bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 2100 |
| CDMA2000 1x | |
| 4G bands | 1, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66 |
| 5G bands | 1, 3, 5, 7, 8, 26, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA |
| Speed | HSPA, LTE, 5G |
Launch
| Announced | 2025, June 26 |
| Status | Available. Released 2025, June 26 |
Body
| Dimensions | 163.1 x 77.9 x 8.2 mm (6.42 x 3.07 x 0.32 in) |
| Weight | 219 g (7.72 oz) |
| Build | Glass front, aluminum frame |
| SIM | Nano-SIM + Nano-SIM |
| IP68 dust tight and water resistant (immersible up to 2m for 30 min) |
Display
| Type | OLED, 68B colors, 144Hz, Dolby Vision, HDR10+, HDR Vivid, 1800 nits (HBM), 3200 nits (peak) |
| Size | 6.83 inches, 114.5 cm2 (~90.2% screen-to-body ratio) |
| Resolution | 1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density) |
| Protection | Scratch/drop-resistant glass |
Platform
| OS | Android 15, HyperOS 2 |
| Chipset | Mediatek Dimensity 9400+ (3 nm) |
| CPU | Octa-core (1×3.63 GHz Cortex-X925 & 3×3.3 GHz Cortex-X4 & 4×2.4 GHz Cortex-A720) |
| GPU | Immortalis-G925 |
Memory
| Card slot | No |
| Internal | 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM |
| UFS 4.1 |
Main Camera
| Dual | 50 MP, f/1.9, 23mm (wide), 1/1.55", 1.0µm, PDAF, OIS 8 MP, 119˚ (ultrawide), 1/4.0", 1.12µm |
| Features | Color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama |
| Video | 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS |
Selfie camera
| Single | 20 MP, (wide), 1/2.0", 0.8µm |
| Features | HDR |
| Video | 1080p@30/60fps |
Sound
| Loudspeaker | Yes, with stereo speakers |
| 3.5mm jack | No |
| 24-bit/192kHz Hi-Res & Hi-Res Wireless audio |
Comms
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct |
| Bluetooth | 5.4, A2DP, LE, LHDC 5 |
| Positioning | GPS (L1+L5), BDS (B1I+B1C+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), NavIC, GLONASS |
| NFC | Yes |
| Infrared port | Yes |
| Radio | Unspecified |
| USB | USB Type-C |
Features
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass |
Battery
| Type | Si/C Li-Ion 7410 mAh |
| Charging | 100W wired, PD3.0 Bypass charging |
Misc
| Colors | Gray, White, Blue, Green |
| Price | About 310 EUR |
Price and Availability
The Xiaomi Redmi K80 Ultra offers a compelling combination of features and performance. While the base price is around €310, the actual cost may vary depending on your location and retailer. Below, you’ll find the approximate price of the Xiaomi Redmi K80 Ultra converted into various currencies. Please note that these are estimates based on recent exchange rates as of June 12, 2026 and may not reflect the exact price you’ll find at a retailer.
- United States: $358
- Japan: ¥57,405
- United Kingdom: £268
- Australia: A$510
- Canada: C$501
- Taiwan: NT$11,324
- Denmark: kr2.314
- Saudi Arabia: ﷼1,343
- South Korea: ₩546,766
- Germany: €310
- Brazil: R$1.844
- Vietnam: ₫9.399.675
- Kenya: KSh 46,343
- India: ₹34,230
- Indonesia: Rp 6.430.919
- Nigeria: ₦483,526
- Pakistan: ₨99,741
- Philippines: ₱21,937
- Bangladesh: ৳৪৪,০৫২
Why Should You Buy the Redmi K80 Ultra?
At roughly 310 EUR, the Redmi K80 Ultra delivers a combination of top-tier chipset, oversized battery, and high-refresh OLED that typically costs significantly more. It is built for buyers who prioritize raw value and longevity over brand prestige, making it one of the most aggressive price-to-performance propositions in the 2025 lineup.
Design and Build Quality
Measuring 163.1 x 77.9 x 8.2 mm and weighing 219 g, the K80 Ultra is a substantial device, with much of that heft coming from its large battery. The glass front and aluminum frame give it a premium feel, while full IP68 dust and water resistance (immersible up to 2m for 30 minutes) is a rare and welcome addition at this price. The dual Nano-SIM tray adds practical flexibility.
Display Experience
The 6.83-inch OLED panel is a clear highlight, offering a 1280 x 2772 resolution at roughly 447 ppi and a 144Hz refresh rate for fluid scrolling and gaming. Support for Dolby Vision, HDR10+, and HDR Vivid, along with up to 3200 nits peak brightness, ensures excellent visibility outdoors and vibrant, accurate playback for streaming content.
Performance and Gaming
Powered by the 3 nm MediaTek Dimensity 9400+ with a Cortex-X925 prime core and the Immortalis-G925 GPU, the K80 Ultra is built to handle demanding games and heavy multitasking with ease. RAM options up to 16GB and UFS 4.1 storage up to 1TB mean app loading and file transfers stay snappy even under sustained load.
Camera Capabilities
The dual rear setup pairs a 50 MP wide sensor with OIS and a 1/1.55″ sensor for strong low-light detail, alongside an 8 MP 119˚ ultrawide for landscapes and group shots. A color spectrum sensor aids white balance, while video tops out at 8K@30fps with gyro-EIS stabilization. The 20 MP front camera handles selfies and 1080p video reliably.
Battery and Charging
The standout 7410 mAh Si/C Li-Ion battery promises exceptional endurance, comfortably lasting well beyond a full day for most users. When it does run low, 100W wired charging with PD3.0 Bypass support refills the cell rapidly while reducing heat during gaming, helping preserve long-term battery health.
Software and Connectivity
Running Android 15 with HyperOS 2, the K80 Ultra offers a feature-rich, customizable interface. Connectivity is comprehensive, with Wi-Fi 7, Bluetooth 5.4 with LHDC 5, NFC, an infrared port, multi-band GPS, and USB Type-C, covering virtually every modern need.
Who Should Buy It?
This phone is ideal for mobile gamers, power users, and value seekers who want flagship-class performance and all-day-plus battery life without paying premium flagship prices. Those who prefer compact phones or expandable storage should note the 219 g weight and the absence of a microSD slot.
Conclusion
The Xiaomi Redmi K80 Ultra is a compelling flagship-killer that combines a powerful Dimensity 9400+ chipset, a huge 7410 mAh battery, a brilliant 144Hz OLED, and IP68 durability at an aggressive price point. For buyers chasing maximum performance and endurance per euro, it is an easy recommendation, provided you can accommodate its size and the lack of expandable storage.